Some Skills For Installing Fag Roller Bearing
Some Skills For Installing Fag Roller Bearing
2021年12月27日
How To Select Fag Non-Standard Bearings And Technical Quality Analysis Of Matching Assembly
How To Select Fag Non-Standard Bearings And Technical Quality Analysis Of Matching Assembly
2021年12月27日

Attention To Rotation Inspection Method Of Iko Self-Aligning Roller Bearing After Installation

Iko Self-Aligning Roller Bearing

After the installation of IKO self-aligning roller bearing, in order to check whether the installation is correct, operation inspection shall be carried out. Small machines can be rotated by hand to confirm whether they rotate smoothly.

The inspection items include poor operation caused by foreign matters, scars and indentation, unstable torque caused by poor installation and poor processing of mounting base, Iko Self-Aligning Roller Bearing excessive torque caused by too small clearance, installation error and sealing friction, etc. If there is no abnormality, power operation can be started.

Large machinery cannot be rotated manually, so the power shall be cut off immediately after no-load start, and the machinery idles. Check whether there is vibration, noise, Iko Self-Aligning Roller Bearing contact of rotating parts, etc. after confirming that there is no abnormality, enter the power operation. Power operation, starting from no-load low speed, slowly increase to the rated operation under the specified conditions.

During the test run, the inspection items are whether there is abnormal sound, temperature change, lubricant leakage or discoloration, etc. If any abnormality is found, stop the operation immediately, Iko Self-Aligning Roller Bearing check the machinery, and remove IKO self-aligning roller bearing for inspection if necessary.

Attention To Rotation Inspection Method Of Iko Self-Aligning Roller Bearing After Installation

The temperature can generally be inferred from the external temperature of the bearing pedestal. However, it is more accurate to directly measure the temperature of the outer ring Iko Self-Aligning Roller Bearing with the oil hole. It rises gradually from operation, and the temperature is usually stable after 1 ~ 2 hours.

If the installation is poor, the temperature will rise sharply, resulting in abnormal high temperature. Iko Self-Aligning Roller Bearing The reasons are too much lubricant, too small clearance, poor installation, excessive friction of sealing device, etc. In the case of high-speed rotation, the wrong selection of structure and lubrication mode is also the reason.

The rotating stethoscope shows strong metal noise, abnormal sound, irregular sound and other abnormalities. Iko Self-Aligning Roller Bearing The reasons include poor lubrication, poor accuracy of shaft or bearing seat, bearing damage, foreign matter intrusion, etc.

Method for detecting installation failure of NTN self-aligning ball bearing

Method For Detecting Installation Failure Of Ntn Self-Aligning Ball Bearing

After the installation of NTN bearing, in order to check whether the installation is correct, operation inspection shall be carried out. Iko Self-Aligning Roller Bearing Small machines can be rotated by hand to confirm whether they rotate smoothly.

The inspection items include poor operation caused by foreign matters, scars and indentation, unstable torque caused by poor installation and poor processing of mounting base, Iko Self-Aligning Roller Bearing excessive torque caused by too small clearance, installation error and sealing friction, etc. If there is no abnormality, power operation can be started.

Power operation, starting from no-load low speed, slowly increase to the rated operation under the specified conditions. During the test run, check whether there is abnormal sound, temperature change of self-aligning ball bearing, lubricant leakage or discoloration, etc.

If any abnormality is found, stop the operation immediately, check the machinery, and remove the bearing for inspection if necessary.

1. The installation and adjustment of low-noise NTN bearings can also follow the grouping method of long-life bearings, so that the fit interference is more consistent and the bearing clearance is more consistent. It is hoped that the fit interference will take a smaller value within the possible range to ensure that the deformation of the bearing raceway is small, so as to reduce the noise caused by the passage of the rolling body.

2. The clearance has a great influence on the noise. The ideal state is that when the NTN bearing is running at high temperature, the clearance value is just zero. The methods to judge the excessive clearance are: the axial displacement of the self-aligning ball bearing in the static state, the reciprocating amplitude is large, and a large and turbid noise is emitted during operation.

3. If there is a nasty shriek during operation, it indicates that the preload of NTN bearing is too large and the bearing has too large pre interference. The preload should be slightly relaxed. If the clearance is too large, the two bearing rings can be slightly offset along the axial direction: it not only reduces the clearance, but also increases the axial rigidity and reduces the bearing noise.

4. When the rolling element enters the no-load area, it will slip or move left and right, which will not only increase the noise, but also cause wear, which can be eliminated by small clearance and large axial stiffness. However, the clearance should not be too small, so as not to cause excessive temperature and shorten service life.

5. Sometimes, due to the large working temperature range of the main engine or the large dispersion of the size between the shaft and the bearing seat hole, it is impossible to obtain a more appropriate clearance at one time. In this case, the elastic constant pressure preloading method can be used for the outer ring of the self-aligning ball bearing.